Williamsburg, Pennsylvania Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Williamsburg weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Rain56%0.29″93°69°—
- SundayJul 5Light Drizzle42%0.02″84°68°-9°
- MondayJul 6Light Showers90%0.02″84°69°0°
- TuesdayJul 7Light Showers85%0.03″75°66°-9°
- WednesdayJul 8Drizzle36%0.06″68°66°-7°
- ThursdayJul 9Overcast38%—90°63°+22°
- FridayJul 10Light Drizzle43%0.01″86°66°-4°
AQI 67 (Moderate), driven by Ozone. AQI down 18 over the last 6 hours — air quality is improving sharply. Ozone at AQI 44. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 44. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 44
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 5
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:30 PM
- Moonset
- 11:22 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Williamsburg at a glance
- Today vs. normal: 71°F — typical for the season
- Last frost: April 19 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 16693
16-Day Forecast — Williamsburg
- Sat93°69°56%
- Sun84°68°42%
- Mon84°69°90%
- Tue75°66°85%
- Wed68°66°36%
- Thu90°63°38%
- Fri86°66°43%
- Sat86°62°29%
- Sun82°58°18%
- Mon84°52°15%
- Tue88°58°12%
- Wed84°60°34%
- Thu85°56°30%
- Fri88°55°42%
- Sat85°65°44%
- Sun82°68°45%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Williamsburg
SPC has placed Williamsburg in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWMRGLMarginal Risk
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Williamsburg
- 16693